Photography
Stargazers had a treat over the weekend as an extreme solar storm, the strongest in two decades, caused fantastic auroras to be seen across large swaths of Europe and North America and as far south as Florida in the United States.
Ken Trombatore
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Ken Trombatore
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The northern lights, formally known as aurora borealis, are caused when a surge of solar particles and energy interacts with the Earth’s magnetosphere, exciting nitrogen and oxygen molecules and releasing photons of light.
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Friday’s storm registered as an “extreme” geomagnetic storm at the G5 level, the highest on the National Oceanic and Atmospheric Administration’s scale — stronger than NOAA forecasts initially predicted. The last extreme storm to hit the Earth, in October 2003, caused power outages and damaged transformers.
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Credits
Photo editing and production by Jintak Han and Kenneth Dickerman